Do you have the bootable Windows 7 USB connected when you do OPTION ONE?
Windows 10 shutdown with fast startup enabled will interfere with the ability to enter a bios boot device option screen at boot up. There are a couple ways around this:
Turn off fast startup in Windows 10
Click the power icon and select restart instead of shutdown and hit your key to get into the bios options on restart
Disconnect all sources of power from the computer (laptop main battery and power supply - or desktop power cord), press the power key for a few seconds to bleed any residual power stored, plug it back in and restart, hitting the key for bios options when it starts up.
I've upgraded 6 computers loaded with OEM Windows to Windows 10 for free, btw.
Update: seem to be getting somewhere. I downloaded the win7 ISO using my other PC's key, made an iso DVD. Reinstalled win10.
Rebooted and voila, seem to be installing win 7, fingers crossed :-) Thanks for all efforts so far, but quick questions:
Have to do custom install (or it will go back to win10), so it asks me where - and there is disk 0, Partition1:"oem (reserved)". So I wonder why I couldn't do factory revert on the ACER?
There is also partition 2 system reserved - what should I do with that?
Installing on the main partition, win selected that as default .....
OK, installed, yay. Just a few drivers to find .....
I'd be interested in any thoughts on my partition queries above - Its something I know little about.
And I will have to cross fingers that MS don't get difficult about my using a different key .....
If you manage to get win 7 oem get installed on your laptop, then first upgrade your oem to sp1. Since i did the same thing in my acer laptop previously running win 7 oem >upgrade(900mb file)> win 7 sp1 >upgrade>win 10 and now it is working perfectly.
derekimo: That's the "old" upgrade matrix, and it's the same one I've been showing to folks.
But recently, there's been some newer articles about Win10 upgrade paths, and they have a much reduced upgrade matrix -- one that now excludes Windows 8. An example of this is in the linked article: http://www.neowin.net/news/microsoft...for-windows-10
And ... this newer article also shows Windows 8 as "excluded" now: https://www.thurrott.com/windows/win...u-get-for-free
So, if these are correct, MS is no longer offering the free Win10 Upgrade for Win8 folks.
Both those articles that you linked to in your post are dated 1 Jun 2015 - two full months BEFORE the July 29th release of Windows 10. Windows 7 SP1, and Windows 8.1 updated versions were always since July 29, and still are only required to receive the Windows 10 upgrade via native Windows Update built into those operating systems. Media Creation Tool and the associated ISO download still upgrade non-SP1 Windows 7 and Windows 8.0 just fine.